Someone(TM) has probably wondered about this before, but why couldn’t CircleCi sponsor the build-matrix stuff?

It’s not that it couldn’t, but why would spend all the time to move something that has been working for years?

So that your time could be freed up?

IMO your time is arguably somewhere between the most and second most valuable for Clojure. It should be spent wisely. Adding more disk/freeing up disk space on build boxes doesn’t sound like the best use of your time, if you don’t mind my saying.

well that was mostly just changing the config for how many builds to keep. certainly vastly less time than recreating the build infrastructure for 50 projects